How to change 1 to 00001?

Question

I want to have numbers with a fixed digit count.

example: 00001, 00198, 48484

I can do like this:

string value;

if (number < 10)
{
    value = "0000" + number.ToString();
}
else if (number < 100)
{
    value = "000" + number.ToString();
}
else if (number < 1000)
{
    ...
}

But this is a bit odd. Is there any built in function for my purpose?

Answer 1

Yes, there is:

string value = String.Format("{0:D5}", number);